//package com.liunian.subject.application.config;
//
//import com.fasterxml.jackson.annotation.JsonInclude;
//import com.fasterxml.jackson.databind.ObjectMapper;
//import com.fasterxml.jackson.databind.SerializationFeature;
//import org.springframework.context.annotation.Configuration;
//import org.springframework.http.converter.HttpMessageConverter;
//import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
//import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
//
//import java.util.List;
//
//@Configuration
//public class GlobalConfig extends WebMvcConfigurationSupport {
//
//    @Override
//    protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
//        super.configureMessageConverters(converters);
//        converters.add(jackson2HttpMessageConverter());
//    }
//
//    private MappingJackson2HttpMessageConverter jackson2HttpMessageConverter() {
//        ObjectMapper objectMapper = new ObjectMapper();
//        objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
//        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
//        return new MappingJackson2HttpMessageConverter(objectMapper);
//    }
//}
